Home / 100,918,690.32-139,328,289.84-66,171,995.04

Finding the Fourth Proportional to 100,918,690.32, 139,328,289.84 and 66,171,995.04

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Solution

The fourth proportional to 100,918,690.32, 139,328,289.84 and 66,171,995.04 is: 91,357,020.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,918,690.32 : 139,328,289.84 = 66,171,995.04 : x
  2. Step 2: Convert to fraction form
    100,918,690.32/139,328,289.84 = 66,171,995.04/x
  3. Step 3: Cross multiply
    100,918,690.32x = 139,328,289.84 × 66,171,995.04
  4. Step 4: Simplify right side
    100,918,690.32x = 9,219,630,904,224,162
  5. Step 5: Solve for x
    x = 9,219,630,904,224,162/100,918,690.32
  6. Step 6: Final answer
    x = 91,357,020.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.